Modbus ETNG History Record Format

Overview

History records can be retrieved from the RTU and stored in various formats. The sections below describe the field names used for the various history record types.

Log Period Record Format

Field Name	Field Type
Timestamp	DateTime
FlowingTime (DB2 protocol only)	Float
DifferentialPressure	Float
StaticPressure	Float
Temperature	Float
Extension (DB2 protocol only)	Float
Volume	Float
Energy	Float
SpecificHeatRatio	Float
SpecificGravity	Float
CarbonDioxide	Float
Nitrogen	Float
Methane	Float
Ethane	Float
Propane	Float
iButane	Float
nButane	Float
iPentane	Float
nPentane	Float
Hexane	Float
Heptane	Float
Oxygen	Float
Octane	Float
Nonane	Float
Decane	Float
Argon	Float
Sequence	Integer (I4)
TotalLogPerTime	Integer (I4)
LogPerAlarm	Integer (I4)

Daily Record Format

Field Name	Field Type
Timestamp	DateTime
Extension	Float
Volume	Float
Energy	Float
StaticPressure	Float
MinAP	Float
MaxAP	Float
PerctAPLow	Float
PerctAPHigh	Float
DifferentialPressure	Float
MinDP	Float
MaxDP	Float
PerctDPLow	Float
PerctDPHigh	Float
Temperature	Float
MinTf	Float
MaxTf	Float
PerctTfLow	Float
PerctTfHigh	Float
FlowingTime	Float
Backflow	Float
TotalDailyTime	Float
DailyAlarm	Float
ContractHour	Integer (I2)
LPStartSeq	Integer (I4)
LPEndSeq	Integer (I4)

Alarm Record Format

Field Name	Field Type
Timestamp	DateTime
AlarmValue	Integer (I4)
AlarmType	Text
AlarmState	Text
AlarmDescription	Text

Event Record Format

Field Name	Field Type
Timestamp	DateTime
EventSource	Integer (I4)
Description	Text
EventOldValue	Float
EventNewValue	Float